Rigby is a city located in Jefferson County Idaho. It is also the county seat of Jefferson County. With a 2020 population of 4,438, it is the 36th largest city in Idaho and the 5109th largest city in the United States . Rigby is currently growing at a rate of 1.67% annually and its population has increased by 12.50% since the most recent census, which recorded a population of 3,945 in 2010. Rigby reached it's highest population of 4,438 in 2021. Spanning over 2 miles, Rigby has a population density of 1,884 people per square mile.
The average household income in Rigby is $51,995 with a poverty rate of 18.87%. The median rental costs in recent years comes to $763 per month, and the median house value is $136,500. The median age in Rigby is 27 years, 27.5 years for males, and 26.3 years for females.